FreeType: Buffer overflow

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200705-22 / freetype
Release Date	May 30, 2007
Latest Revision	May 30, 2007: 01
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
media-libs/freetype	< 2.3.4-r2	>= 2.3.4-r2, < 2.0	All supported architectures

Related bugreports: #179161

Synopsis

A vulnerability has been discovered in FreeType allowing for the execution of arbitrary code.

2. Impact Information

Background

FreeType is a True Type Font rendering library.

Description

Victor Stinner discovered a heap-based buffer overflow in the function Get_VMetrics() in src/truetype/ttgload.c when processing TTF files with a negative n_points attribute.

Impact

A remote attacker could entice a user to open a specially crafted TTF file, possibly resulting in the execution of arbitrary code with the privileges of the user running FreeType.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All FreeType users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-libs/freetype-2.3.4-r2"

4. References

CVE-2007-2754

Updated May 30, 2007

Summary: This is a Gentoo Linux Security Advisory

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